COIL SPRING

PROBLEM TO BE SOLVED: To provide a coil spring which is low in cost and good in responsiveness to a temperature change, and its manufacturing method. SOLUTION: The closed-end coil spring constituted of an alloy wire composed of a Ti-Ni based shape-memory alloy is characterized in that a ratio (dE/d)...

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Bibliographische Detailangaben
Hauptverfasser:	NAKAHATA TAKUJI, SEKI EIJI
Format:	Patent
Sprache:	eng
Schlagworte:	ACTUATING-FLOATS BLASTING COCKS DEVICES FOR VENTING OR AERATING ENGINEERING ELEMENTS AND UNITS GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVEFUNCTIONING OF MACHINES OR INSTALLATIONS HEATING LIGHTING MEANS FOR DAMPING VIBRATION MECHANICAL ENGINEERING SHOCK-ABSORBERS SPRINGS TAPS THERMAL INSULATION IN GENERAL VALVES WEAPONS
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Beschreibung
Zusammenfassung:	PROBLEM TO BE SOLVED: To provide a coil spring which is low in cost and good in responsiveness to a temperature change, and its manufacturing method. SOLUTION: The closed-end coil spring constituted of an alloy wire composed of a Ti-Ni based shape-memory alloy is characterized in that a ratio (dE/d) of the thickness dE(mm) of the tip of the alloy wire in the spring axial direction and the line diameter d(mm) of the alloy wire is 0.50 to 0.75 at one or both coil ends, and a ratio (D/d) of the average diameter D(mm) of a coil and the line diameter d(mm) of the alloy wire is not larger than 10. COPYRIGHT: (C)2011,JPO&INPIT